Mitsubishi Hitachi Power Systems, Ltd.

Mitsubishi Power, Ltd.

Chuanhong Fan

Seijiro Muramatsu

Toru Muto

Kenichi Hattori

Keiji Fugane

Kenta Igarashi

Yoichi Kotani

Hirohide Murayama

Takuma Yamaguchi

Kentaro Yasumatsu

Shinji Waki

A hollow metal part is used as a pipe component for a refrigerant flow path of a rotating electrical machine adapted to cool a stator coil with a refrigerant. The rotating electrical machine includes a connection arm that couples the stator coil and a power supply terminal at a stator coil end portion of the stator coil, and an insulating hose that is coupled to the stator coil and the connection arm through a first hollow metal part in order to supply the refrigerant to the stator coil and the connection arm. The first hollow metal part is formed integrally by joining a part formed of stainless steel to a part made of oxygen-free copper.

Hollow metal part of stator of rotating electrical machine, rotating electrical machine, and manufacturing process of hollow metal part

A rotating electrical machine includes: a rotor; a stator; a high voltage bushing; power lines connecting the stator coil to the bushing; a support insulator that supports the power lines; a rotating electrical machine outer casing that contains at least the rotor, the stator and a connection portion between the stator coil and the power lines, and is filled with hydrogen gas; and a terminal box which communicates with the outer casing and is attached to a lower portion of the outer casing, the insulator installed in the terminal box, and terminal box containing at least the power lines supported by the insulator and a part of the bushing connected to the supported power lines. The insulator is installed vertically on a bottom face of the terminal box, and the vertically installed insulator and a portion of the bushing in the terminal box are disposed in parallel with each other.

Rotating electrical machine

Growing community of inventors

Yokohama, Japan

Chuanhong Fan